SWFRETools 1.1.0 – Adobe Flash SWF file reverse engineering! The most advanced tool is called Flash Dissector. It is a Java-based GUI tool you can use to inspect the binary content of SWF files. The third tool is a primitive Python-based debugger that can be used to hook and trace the Flash Player executable. The tool is useful for vulnerability researchers that have a SWF. file that crashes Flash Player and now they want to get rid of all parts of the SWF. file that are not related to the crash.
Source: https://thehackernews.com/2011/05/swfretools-110-adobe-flash-swf-file.html